Initial documentation was saying that "Legacy" would be removed, which would mean the "old" firewire and USB that could not "manage" the power on their bus. That also means "old" software might be affected. We'll have to see what their "Compatibility Mode" actually entails... I know I was one of quite a few people that commented on that on the Insider's page. I was going to link you to the MS tool for "Hardware Compatibility", or whatever it is they call it, but it has been pulled from the site (??)... I do not like most of their "verbiage" about what the OS will do. It sounds more like social engineering than it does a computer OS. I am really curious about my audio equipment though, that currently runs OK in Win10 (it is "legacy" hardware and software), but I do have to re-set most of my user settings each time the OS updates. I do not have that problem in Windows 7 with the same gear. In fact, I pull the wire and still use XP to record multi-track hi-res audio when something is "important"...
Minimum system requirements
Minimum system requirements
Processor 1 gigahertz (GHz) or faster with 2 or more cores on a compatible 64-bit processor or System on a Chip (SoC)
Memory 4 GB RAM
Storage 64 GB or larger storage device
System firmware UEFI, Secure Boot capable
TPM Trusted Platform Module (TPM) version 2.0
Minimum system requirements
Graphics card DirectX 12 compatible graphics / WDDM 2.x
Display >9” with HD Resolution (720p)
Internet connection Microsoft account and internet connectivity required for setup for Windows 11 Home
Certain features require specific hardware, see detailed system requirements.
The graphics card requirment is going to "kill" most of my machines, as will the UEFI requirment...